Slide for extension tables



lApril 2s, 1921s.y

1535527' C. LUNDGREN ET AL SLIDE FR EXTENSION TABLES Filed May '7, 1925 FE. E I3 n snmvm. 4m uw mLJ/l .v. hlm# fm Mr CE M b l w b fg m\ la In order to determine the limit of expansion or' the extension bars, suitable staples 23 are imbedded in the peak 24 between'the grooves 13 ol one bar of each set, here shown as bars 10 and 12. The head of the staple 23 arises slightly above'itlie face of.

the bar, to which it is secured and thus strikes against both membersof' the cresS slides in the bar 11, so that the blow will have no tendency to cause one plate toshift relatively t0 the other and cause uneven pressure against the screw v19.

llf'liile, one embodiment only has been shown and described of this inventiom-we are not to be limited thereto since it is obvious that others may be lmadeivithout departing from the spirit and scope ofthe invention as set forth in the following claims.

Having thus set forth our invention 'what we claim as new and for ,which wefdesire protection by Letters Patent is:

1. A table slide comprising two plates, each plate having a longitudinal sloti and a circular opening ltherethrough at theinner end or' the slot, the plates being assembled by means of saidslots inthe form of a cross, the two openings intersecting tov provide a tapering ellipsoidal4 opening through said slide.

2. rlhe combination with an extension bar of a table having longitudinal grooves therein at right angles to each other, of a slidefin the forni of a cross, two ,wings fir-which enter said grooves, having an fellipsoid'al opening at the centerthereof 'through which opening ascrew is passed to sec-uresaid slide to said extension bar and a second exten-sion bar having similar longitudinal-groovesin- .Consisting ofatwo plates, each plate having a longitudinal slot and a circular opening therethrough atthe inner end of the slot, the plates being assembled by means of said .slots in the form of a cross, the two openiiigsintersectingvtoprovide a tapering ellipsoidal opening through said slide, said slide -beiiigpositioned upon said bar by placing in said grooves the t-wo wings of said slide de- 'iningthe `siii'allei end vot'. said opening, a yscrew in--saidi-bar-with itsliead bearing upon ythe edgcsof said opening in said wings, and

a second extension 1 bar having .similar grooves which the other two wings of said fslide enter.

' 4. The coi'nbination with an extension bar oa table, having longitudinaly grooves at Iright angeles tof-each other, a slide in the form of a cross, two wings of which lie in saidgrooves, a second extension bar having similar-grooves in which the other two wings of said lslide lie,-n1ieans for fixing said yslide `in position A*in said first bar, whereby the slide -reciprocates vin the .grooves of said second bar when said bars are shifted longitudina'llyof each other, and a stop in said second Ibarl betweenthe grooves therein 3 against which said Slidestrikes thereby lim A'iting its-movement in one direction.

In testimony.whereof wehave aiiixed our signatures.

f 'CONRAD LUNDGREN.

ERNEST HEDN. 

